CVE-2021-24122: Apache Tomcat Information Disclosure Vulnerability

Q: What is CVE-2021-24122?

CVE-2021-24122 is a security vulnerability in Apache Tomcat involving Information Disclosure in Apache Tomcat under CWE-706: Use of Incorrectly-Resolved Name or Reference.

Q: Which Apache Tomcat versions are affected?

Affected versions include releases prior to 10.0.0-M10, 9.0.40, 8.5.60, 7.0.107 across affected packages: org.apache.tomcat.embed:tomcat-embed-core.

Q: What version fixes CVE-2021-24122?

Upgrading to 10.0.0-M10, 9.0.40, 8.5.60, 7.0.107 (or the latest patched release for your respective branch) resolves the vulnerability.

Q: Is tomcat-embed-core affected?

Yes, org.apache.tomcat.embed:tomcat-embed-core is affected in releases prior to 10.0.0-M10, 9.0.40, 8.5.60, 7.0.107. Upgrade your dependency to 10.0.0-M10, 9.0.40, 8.5.60, 7.0.107 or later.

Q: What is the CVSS score of CVE-2021-24122?

CVE-2021-24122 has a CVSS v3.1 base score of 5.9 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

Q: What CWE is associated with CVE-2021-24122?

CVE-2021-24122 is classified under CWE-706: Use of Incorrectly-Resolved Name or Reference (The product uses a name or reference to access a resource, but the name/reference resolves to a resource that is outside of the intended control sphere.).

Q: How can I check Maven dependencies for CVE-2021-24122?

Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.tomcat.embed'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

MODERATE

Advisory Identifier: GHSA-2rvv-w9r2-rg7m

CVSS 5.9

CWE-706 CWE-200

Published 2021-05-13

Advisory Summary

CVE-2021-24122 is a MODERATE (CVSS 5.9) information disclosure vulnerability (CWE-706: Use of Incorrectly-Resolved Name or Reference) affecting Apache Tomcat libraries in the Maven ecosystem. The issue involves information disclosure in apache tomcat. Remediation is available by upgrading affected packages to version 10.0.0-M10, 9.0.40, 8.5.60, 7.0.107.

CVE-2021-24122 at a Glance

CVE Identifier CVE-2021-24122

GHSA Identifier GHSA-2rvv-w9r2-rg7m

Severity MODERATE

CVSS v3.1 Base Score 5.9

CWE Classification CWE-706: Use of Incorrectly-Resolved Name or Reference

Affected Product Apache Tomcat

Package Ecosystem Maven

Published Date 2021-05-13

Last Updated 2024-03-11

Security Impact

CVSS: 5.9

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)

Attack Complexity High (AC:H)

Privileges Required None (PR:N)

User Interaction None (UI:N)

Scope Unchanged (S:U)

Confidentiality High (C:H)

Integrity None (I:N)

Availability None (A:N)

How to Fix CVE-2021-24122

To remediate this vulnerability, upgrade all affected Apache Tomcat dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.apache.tomcat.embed:tomcat-embed-core fixed: 10.0.0-M10

<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-core</artifactId>
    <version>10.0.0-M10</version>
</dependency>

org.apache.tomcat.embed:tomcat-embed-core fixed: 9.0.40

<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-core</artifactId>
    <version>9.0.40</version>
</dependency>

org.apache.tomcat.embed:tomcat-embed-core fixed: 8.5.60

<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-core</artifactId>
    <version>8.5.60</version>
</dependency>

org.apache.tomcat.embed:tomcat-embed-core fixed: 7.0.107

<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-core</artifactId>
    <version>7.0.107</version>
</dependency>

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

mvn dependency:tree -Dincludes=org.apache.tomcat.embed

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2021-24122, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.apache.tomcat.embed

Analyze the terminal output to locate any version of Apache Tomcat in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 10.0.0-M10), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.apache.tomcat.embed command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-706: Use of Incorrectly-Resolved Name or Reference, where the product uses a name or reference to access a resource, but the name/reference resolves to a resource that is outside of the intended control sphere. In Apache Tomcat, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

When serving resources from a network location using the NTFS file system, Apache Tomcat versions 10.0.0-M1 to 10.0.0-M9, 9.0.0.M1 to 9.0.39, 8.5.0 to 8.5.59 and 7.0.0 to 7.0.106 were susceptible to JSP source code disclosure in some configurations. The root cause was the unexpected behaviour of the JRE API File.getCanonicalPath() which in turn was caused by the inconsistent behaviour of the Windows API (FindFirstFileW) in some circumstances.

CVE-2021-24122 Affected Apache Tomcat Versions

4 component(s)

Fixed Versions:

10.0.0-M109.0.408.5.607.0.107

Product / Package	Ecosystem	Affected Versions	Fixed Version
org.apache.tomcat.embed:tomcat-embed-core maven/org.apache.tomcat.embed/tomcat-embed-core	Maven	≥ 10.0.0-M1 < 10.0.0-M10	10.0.0-M10
org.apache.tomcat.embed:tomcat-embed-core maven/org.apache.tomcat.embed/tomcat-embed-core	Maven	≥ 9.0.0 < 9.0.40	9.0.40
org.apache.tomcat.embed:tomcat-embed-core maven/org.apache.tomcat.embed/tomcat-embed-core	Maven	≥ 8.5.0 < 8.5.60	8.5.60
org.apache.tomcat.embed:tomcat-embed-core maven/org.apache.tomcat.embed/tomcat-embed-core	Maven	≥ 7.0.0 < 7.0.107	7.0.107

References

NVD — CVE-2021-24122 NVD

https://nvd.nist.gov/vuln/detail/CVE-2021-24122

Security Fix Commit FIX COMMIT

https://github.com/apache/tomcat/commit/7f004ac4531c45f9a2a2d1470561fe135cf27bc2

Security Fix Commit FIX COMMIT

https://github.com/apache/tomcat/commit/800b03140e640f8892f27021e681645e8e320177

Security Fix Commit FIX COMMIT

https://github.com/apache/tomcat/commit/920dddbdb981f92e8d5872a4bb126a10af5ca8a9

Security Fix Commit FIX COMMIT

https://github.com/apache/tomcat/commit/935fc5582dc25ae10bab6f9d5629ff8d996cb533

Apache Tomcat Security Information SECURITY

https://www.oracle.com//security-alerts/cpujul2021.html

Apache Tomcat Security Information SECURITY

https://tomcat.apache.org/security-9.html

Apache Tomcat Security Information SECURITY

https://tomcat.apache.org/security-8.html

Apache Tomcat Security Information SECURITY

https://tomcat.apache.org/security-7.html

Apache Tomcat Security Information SECURITY

https://tomcat.apache.org/security-10.html

Apache Tomcat Security Information SECURITY

https://security.netapp.com/advisory/ntap-20210212-0008

lists.debian.org/debian-lts-announce... WEB

https://lists.debian.org/debian-lts-announce/2021/03/msg00018.html

lists.apache.org/thread.html/rca833c... WEB

https://lists.apache.org/thread.html/rca833c6d42b7b9ce1563488c0929f29fcc95947d86e5e740258c8937@%3Cdev.tomcat.apache.org%3E

lists.apache.org/thread.html/rb32a73... WEB

https://lists.apache.org/thread.html/rb32a73b7cb919d4f44a2596b6b951274c0004fc8b0e393d6829a45f9@%3Cusers.tomcat.apache.org%3E

lists.apache.org/thread.html/r7e0bb9... WEB

https://lists.apache.org/thread.html/r7e0bb9ea415724550e2b325e143b23e269579e54d66fcd7754bd0c20@%3Cdev.tomcat.apache.org%3E

lists.apache.org/thread.html/r776c64... WEB

https://lists.apache.org/thread.html/r776c64337495bf28b7d5597268114a888e3fad6045c40a0da0c66d4d@%3Cdev.tomee.apache.org%3E

lists.apache.org/thread.html/r7382e1... WEB

https://lists.apache.org/thread.html/r7382e1e35b9bc7c8f320b90ad77e74c13172d08034e20c18000fe710@%3Cdev.tomee.apache.org%3E

lists.apache.org/thread.html/r159588... WEB

https://lists.apache.org/thread.html/r1595889b083e05986f42b944dc43060d6b083022260b6ea64d2cec52@%3Cannounce.tomcat.apache.org%3E

lists.apache.org/thread.html/r159588... WEB

https://lists.apache.org/thread.html/r1595889b083e05986f42b944dc43060d6b083022260b6ea64d2cec52@%3Cannounce.apache.org%3E

Apache Tomcat Source Repository REPOSITORY

https://github.com/apache/tomcat

lists.apache.org/thread.html/r159588... WEB

https://lists.apache.org/thread.html/r1595889b083e05986f42b944dc43060d6b083022260b6ea64d2cec52%40%3Cannounce.tomcat.apache.org%3E

Apache Tomcat Security Information SECURITY

http://www.openwall.com/lists/oss-security/2021/01/14/1

Frequently Asked Questions

What is CVE-2021-24122?

CVE-2021-24122 is a security vulnerability in Apache Tomcat involving Information Disclosure in Apache Tomcat under CWE-706: Use of Incorrectly-Resolved Name or Reference.

Which Apache Tomcat versions are affected?

Affected versions include releases prior to 10.0.0-M10, 9.0.40, 8.5.60, 7.0.107 across affected packages: org.apache.tomcat.embed:tomcat-embed-core.

What version fixes CVE-2021-24122?

Upgrading to 10.0.0-M10, 9.0.40, 8.5.60, 7.0.107 (or the latest patched release for your respective branch) resolves the vulnerability.

Is tomcat-embed-core affected?

Yes, org.apache.tomcat.embed:tomcat-embed-core is affected in releases prior to 10.0.0-M10, 9.0.40, 8.5.60, 7.0.107. Upgrade your dependency to 10.0.0-M10, 9.0.40, 8.5.60, 7.0.107 or later.

What is the CVSS score of CVE-2021-24122?

CVE-2021-24122 has a CVSS v3.1 base score of 5.9 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

What CWE is associated with CVE-2021-24122?

CVE-2021-24122 is classified under CWE-706: Use of Incorrectly-Resolved Name or Reference (The product uses a name or reference to access a resource, but the name/reference resolves to a resource that is outside of the intended control sphere.).

How can I check Maven dependencies for CVE-2021-24122?

Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.tomcat.embed'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

Machine-readable OSV JSON OSV v1.5 Schema

Normalized schema output

View Raw JSON

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  "id" : "GHSA-2rvv-w9r2-rg7m",
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  "published" : "2021-05-13T22:30:02Z",
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  } ],
  "database_specific" : {
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    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-04-06T21:27:31Z",
    "nvd_published_at" : "2021-01-14T15:15:00Z"
  }
}

CVSS V3

5.9 MODERATE

Attack Vector Network (AV:N)

Attack Complexity High (AC:H)

Privileges Required None (PR:N)

User Interaction None (UI:N)

Scope Unchanged (S:U)

Confidentiality High (C:H)

Integrity None (I:N)

Availability None (A:N)

Vector String

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Advisory Metadata

Source ID: GHSA-2rvv-w9r2-rg7m
Schema Version: 1.4.0
Published: 2021-05-13 22:30
Last Modified: 2024-03-11 16:32
Database Record File: advisories/github-reviewed/2021/05/GHSA-2rvv-w9r2-rg7m/GHSA-2rvv-w9r2-rg7m.json